Effect of Non-derivative Instruments Qualifying and Designated as Hedging Instruments in Net Investment Hedges on the Consolidated Financial Statements (Detail) (Non-derivative instruments, USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	$ (17,294)	$ 60,887	$ (54,502)	$ 102,274
Amount of Gain (Loss) Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Other income (expense) | Foreign Currency Debt
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	(17,294)	60,887	(54,502)	102,274
Amount of Gain (Loss) Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing)